Adjustable stuffing-box for sliding rods



(No Model.)

' G. H. HITGHGOGK.

ADJUSTABLE STUPPING BOX FOR SLIDING RODS.

No. 442,047. Patented Dec. 2, 1890.

away Am Arm/mus.

UNITED STATES PATENT OEFIcE.

GEORGE I'I. HITOIIOO CK, OF DANVILLE, ILLINOIS.

.ADJUSTABLE STUFFlNG-BOX FOR SLIDING RODS.

SPECIFICATION forming part of Letters Patent No. 442,047, dated December 2, 1890.

Application filed June 15,1889. Serial No. 314,338. (No model.) i

To 00% whom it may concern.-

Be it known that I, GEORGE H. HITOHOOCK, of Danville, in the county of Vermilion and State of Illinois, have invented a new and Improved Adjustable Stuffing-Box for Sliding Rods,of which the following is aspecification, reference being had to the annexed drawings, forming a part thereof, in Which' Figure l is a longitudinal section of my improved stuffing-box, and Fig. 2 is a transverse section taken on line so 00 in Fig. 1.

Similar letters of reference indicate corresponding parts in both views.

The object of my invention is to construct a stuffing-box for sliding rods-such as pist0n-rodswhich will adjust itself to any lateral movements of the rod, thereby avoiding straining and cutting; also to provide a stuffing-box which may be applied in place of the one commonly in use.

The invention consists in the particular construction and arrangement of parts, as hereinafter fully described, and pointed out in the claims.

The central part a of the stuffing-box A consists of a cylindrical piece of metal centrally bored and having conical cavities formed in opposite ends, with cylindrical collars b b extending beyond the conical cavities. To the collars b b are fitted the glands c c, in the inner faces of which are formed conical cavities, which, in conjunction with the cavities of the central part a, form a receptacle for the packing material. The glands c c are made spherically convex upon the outer side and are fitted to the concave plates at d, which, together with the glands c c, are centrally apertured to receive the sliding rod B. The stuffing-box A thus formed is intended to be inserted loosely in the ordinary. stuffing-box O, and is held in place by the plate D, which is apertured to receive the rod B and also to receive the threaded studs E, which are inserted in the stuffing-box C, and

are provided with nuts e upon their outer ends, between which and the plate D are placed springs f. The outer faces of the glands c c and both faces of the concave plates (1 d are provided with annular grooves t for water or steam packing. It will be seen that with this construction any lateral movement of the rod B will move the stuffingbox A and still a tight joint will be maintained between the rod and the stunting-box.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A stuffing-box comprising a body portion having conical cavities in its ends and collars projecting beyond the conical cavities, and glands having their ends reduced to fit within the collars of the body portion and provided with conical cavities in the inner faces of the reduced ends, substantially as described.

2. A stufling-box comprising a body portion having conical cavities in its ends and collars projecting beyond the cavities, glands having convex outer ends and conical cavities in their inner faces and reduced to fit Within the collars of the body portion, concave plates fitting on the convex portions of the glands, and means for locking the parts together, substantially as described.

3. A stuffing-box consisting of the body portion (1, having conical cavities in its ends and collars b b projecting beyond the cavities, glands c 0', having convex outer faces, conical cavities in their inner faces and reduced to fit in the collars of the body, concave plates cl d, fitting on the convex portions of the glands, the plate D, the studs E, the nuts e, and springsf, substantially as herein shown and described.

GEORGE I-I. HITOHCOOK.

Witnesses:

MYETIE HITGHCOCK, JENNIE I-IITcHcooK. 

